Chrissy The Retro Scamp
@chris-jh.bsky.social
Software engineer by trade. I like retro things such as the sega megadrive, c64, amiga....
Part of the Board Folk Team
https://github.com/orgs/Board-Folk/repositories
Part of the Board Folk Team
https://github.com/orgs/Board-Folk/repositories
Reposted by Chrissy The Retro Scamp
Main board replica now on Github
github.com/Board-Folk/E...
github.com/Board-Folk/E...
GitHub - Board-Folk/Einstein-TC-01: Tatung Einstein TC-01
Tatung Einstein TC-01. Contribute to Board-Folk/Einstein-TC-01 development by creating an account on GitHub.
github.com
November 3, 2025 at 6:34 PM
Main board replica now on Github
github.com/Board-Folk/E...
github.com/Board-Folk/E...
Today i went to the Woodbank Garden Centre, met Elvis the Parrot, had an amazing breakfast in the cafe and fun in the old penny arcade.
October 30, 2025 at 3:23 PM
Today i went to the Woodbank Garden Centre, met Elvis the Parrot, had an amazing breakfast in the cafe and fun in the old penny arcade.
I recently got the Commodore Max, and i used the excellent Tool DuPal v3 (github.com/DuPAL-PAL-DU...) to get the logic out of the MOS6703 (PLA’ish).
With the help of HKZLab, @grandoldian.bsky.social and @jensrestemeier.bsky.social we got something, just needs testing after i rebuild my max 😄
With the help of HKZLab, @grandoldian.bsky.social and @jensrestemeier.bsky.social we got something, just needs testing after i rebuild my max 😄
October 27, 2025 at 9:15 AM
I recently got the Commodore Max, and i used the excellent Tool DuPal v3 (github.com/DuPAL-PAL-DU...) to get the logic out of the MOS6703 (PLA’ish).
With the help of HKZLab, @grandoldian.bsky.social and @jensrestemeier.bsky.social we got something, just needs testing after i rebuild my max 😄
With the help of HKZLab, @grandoldian.bsky.social and @jensrestemeier.bsky.social we got something, just needs testing after i rebuild my max 😄
Reposted by Chrissy The Retro Scamp
Validated the Board Folk #LaserActive SYPS repro using a PSU that went supernova! In the process, I replaced the dead optocoupler & primary side BJT plus a pair of 2.2k resistors that were open circuit. You can see how rancid the original board was 🤮 Found 2 errors to fix also!
October 20, 2025 at 5:10 AM
Validated the Board Folk #LaserActive SYPS repro using a PSU that went supernova! In the process, I replaced the dead optocoupler & primary side BJT plus a pair of 2.2k resistors that were open circuit. You can see how rancid the original board was 🤮 Found 2 errors to fix also!
Reposted by Chrissy The Retro Scamp
Well, Lee, Adrian and Mark - how about this?
DesTestKernal - a version of DesTest that you can program onto an appropriate PROM as a replacement for the C64 kernal ROM. When cartridges fail you, this little beauty might just get the job done!
factorofmatt.com/destestkernal
DesTestKernal - a version of DesTest that you can program onto an appropriate PROM as a replacement for the C64 kernal ROM. When cartridges fail you, this little beauty might just get the job done!
factorofmatt.com/destestkernal
Factor of Matt
factorofmatt.com
October 12, 2025 at 3:53 PM
Well, Lee, Adrian and Mark - how about this?
DesTestKernal - a version of DesTest that you can program onto an appropriate PROM as a replacement for the C64 kernal ROM. When cartridges fail you, this little beauty might just get the job done!
factorofmatt.com/destestkernal
DesTestKernal - a version of DesTest that you can program onto an appropriate PROM as a replacement for the C64 kernal ROM. When cartridges fail you, this little beauty might just get the job done!
factorofmatt.com/destestkernal
Had a great day at the @visitthecave.bsky.social met some lovely folk, even @morefunmakingit.bsky.social
Didn’t take many photos, but here is one of me playing 1942 on an Amiga
Didn’t take many photos, but here is one of me playing 1942 on an Amiga
August 30, 2025 at 7:55 PM
Had a great day at the @visitthecave.bsky.social met some lovely folk, even @morefunmakingit.bsky.social
Didn’t take many photos, but here is one of me playing 1942 on an Amiga
Didn’t take many photos, but here is one of me playing 1942 on an Amiga
Sat waiting for the Lavender Bakehouse to open to have pancakes and bacon, before heading off to the @visitthecave.bsky.social
August 30, 2025 at 8:55 AM
Sat waiting for the Lavender Bakehouse to open to have pancakes and bacon, before heading off to the @visitthecave.bsky.social
Reposted by Chrissy The Retro Scamp
Here, have a video of it working, as a treat:
August 13, 2025 at 4:02 AM
Here, have a video of it working, as a treat:
Reposted by Chrissy The Retro Scamp
Another night, another photo of my monitor teasing what I'm working on.
August 13, 2025 at 3:56 AM
Another night, another photo of my monitor teasing what I'm working on.
Reposted by Chrissy The Retro Scamp
i've added support for more RAM chips to the Pico DRAM Tester!
4027 (4K x 1)
4108 (8K x 1 that are 4116s with only half test good: MK4108, TMS4108, etc)
4132 (32K x 1 that are 4164s with only half tested good: TMS4532, M3732)
there are also bug fixes.
github.com/schlae/pico-...
4027 (4K x 1)
4108 (8K x 1 that are 4116s with only half test good: MK4108, TMS4108, etc)
4132 (32K x 1 that are 4164s with only half tested good: TMS4532, M3732)
there are also bug fixes.
github.com/schlae/pico-...
GitHub - schlae/pico-dram-tester: Raspberry Pi Pico 2 Vintage DRAM Tester
Raspberry Pi Pico 2 Vintage DRAM Tester. Contribute to schlae/pico-dram-tester development by creating an account on GitHub.
github.com
August 7, 2025 at 2:24 AM
i've added support for more RAM chips to the Pico DRAM Tester!
4027 (4K x 1)
4108 (8K x 1 that are 4116s with only half test good: MK4108, TMS4108, etc)
4132 (32K x 1 that are 4164s with only half tested good: TMS4532, M3732)
there are also bug fixes.
github.com/schlae/pico-...
4027 (4K x 1)
4108 (8K x 1 that are 4116s with only half test good: MK4108, TMS4108, etc)
4132 (32K x 1 that are 4164s with only half tested good: TMS4532, M3732)
there are also bug fixes.
github.com/schlae/pico-...
Reposted by Chrissy The Retro Scamp
I've just released version v3.2.0 of the PicoGUS firmware with lots of great improvements, such as a fix for freeze in SB mode, volume setting (thx Delphius), high-quality resampling of OPL2 audio (thx korneliuszo) and way more
Click through to read the full release notes: github.com/polpo/picogu...
Click through to read the full release notes: github.com/polpo/picogu...
Release v3.2.0 · polpo/picogus
Fixes/improvements
General
Settings saved in flash with pgusinit /save are now preserved when upgrading to a firmware version that introduces new settings
Volume control is now available for all s...
github.com
August 9, 2025 at 10:05 PM
I've just released version v3.2.0 of the PicoGUS firmware with lots of great improvements, such as a fix for freeze in SB mode, volume setting (thx Delphius), high-quality resampling of OPL2 audio (thx korneliuszo) and way more
Click through to read the full release notes: github.com/polpo/picogu...
Click through to read the full release notes: github.com/polpo/picogu...
Why Hello There 😍
Loving the size
Loving the size
August 9, 2025 at 9:29 AM
Why Hello There 😍
Loving the size
Loving the size
Sixtyclone Bird Seed+, @peepouk.bsky.social and @grandoldian.bsky.social originally did the birdseed.
I added the + bit, being converting the logic ic’s to smt and also added in c0pperdragons analog only modulator replacement (i have tweaked since this, to add to the silkscreen as i forgot)
I added the + bit, being converting the logic ic’s to smt and also added in c0pperdragons analog only modulator replacement (i have tweaked since this, to add to the silkscreen as i forgot)
July 27, 2025 at 6:58 PM
Sixtyclone Bird Seed+, @peepouk.bsky.social and @grandoldian.bsky.social originally did the birdseed.
I added the + bit, being converting the logic ic’s to smt and also added in c0pperdragons analog only modulator replacement (i have tweaked since this, to add to the silkscreen as i forgot)
I added the + bit, being converting the logic ic’s to smt and also added in c0pperdragons analog only modulator replacement (i have tweaked since this, to add to the silkscreen as i forgot)
Reposted by Chrissy The Retro Scamp
Looks like on the forums other people have this kind of issue with their originals. Can't figure out what is is.
July 13, 2025 at 9:58 AM
Looks like on the forums other people have this kind of issue with their originals. Can't figure out what is is.
Reposted by Chrissy The Retro Scamp
Did an Einstein TC-01 replica board with @peepouk.bsky.social. All good and well, except the keyboard plays a tune - on the boot screen. 🤷 😅
July 13, 2025 at 9:56 AM
Did an Einstein TC-01 replica board with @peepouk.bsky.social. All good and well, except the keyboard plays a tune - on the boot screen. 🤷 😅
Reposted by Chrissy The Retro Scamp
After being extremely cryptic about the new hardware project I'm working on in my last "photo of my monitor" post, here's a hopefully less cryptic one. Now that more things are working, here's a clue that is hopefully a little more obvious about what it is:
July 9, 2025 at 5:41 AM
After being extremely cryptic about the new hardware project I'm working on in my last "photo of my monitor" post, here's a hopefully less cryptic one. Now that more things are working, here's a clue that is hopefully a little more obvious about what it is:
July 5, 2025 at 3:01 PM
cant wait for this, the start of ide awesomeness with a pico
This photo is a hint at a new hardware project I'm working on. What on the screen shows that I've met a pretty major milestone in getting it working, showing there's a good chance the project will be successful! 🤞
July 1, 2025 at 5:25 PM
cant wait for this, the start of ide awesomeness with a pico
Reposted by Chrissy The Retro Scamp
I am hereby pleased to announce that I am now the current owner and acting CEO of CEFUCOM. I'm looking for angel investors to provide the ¥350 required to purchase the company; enquire within.
June 30, 2025 at 2:47 PM
I am hereby pleased to announce that I am now the current owner and acting CEO of CEFUCOM. I'm looking for angel investors to provide the ¥350 required to purchase the company; enquire within.
Reposted by Chrissy The Retro Scamp
#PicoGUS is now an ODE! I've just released firmware v3.0.0, which adds Panasonic CD-ROM drive emulation. Put some ISOs or BIN/CUE files on a USB stick, plug it into your PicoGUS, and you've got a virtual CD-ROM drive that works in DOS and Windows 9x and supports CD audio. github.com/polpo/picogu...
Release v3.0.0 · polpo/picogus
New features/changes
CD-ROM emulation
PicoGUS now supports CD-ROM emulation (in other words, PicoGUS is now an ODE)! It emulates a Panasonic/MKE interface and drive and supports CD images in ISO or...
github.com
June 19, 2025 at 3:16 PM
#PicoGUS is now an ODE! I've just released firmware v3.0.0, which adds Panasonic CD-ROM drive emulation. Put some ISOs or BIN/CUE files on a USB stick, plug it into your PicoGUS, and you've got a virtual CD-ROM drive that works in DOS and Windows 9x and supports CD audio. github.com/polpo/picogu...
Making a very very slow start in reversing the Acorn A7000/Plus.
Did sand down the front side, gone a little too far in places.
Hopefully work it out 😂
Will be months if not years (already been about 2) 😆
There are tiny little traces hidden in the layers
first job building symbols and footprints
Did sand down the front side, gone a little too far in places.
Hopefully work it out 😂
Will be months if not years (already been about 2) 😆
There are tiny little traces hidden in the layers
first job building symbols and footprints
June 15, 2025 at 5:37 PM
Making a very very slow start in reversing the Acorn A7000/Plus.
Did sand down the front side, gone a little too far in places.
Hopefully work it out 😂
Will be months if not years (already been about 2) 😆
There are tiny little traces hidden in the layers
first job building symbols and footprints
Did sand down the front side, gone a little too far in places.
Hopefully work it out 😂
Will be months if not years (already been about 2) 😆
There are tiny little traces hidden in the layers
first job building symbols and footprints
A little side project i asked my friend @zaxour.bsky.social for
A TI99/4A USBC-PD internal psu replacement
I didnt have the external psu with the weird connector on it
Just had to harvest the power switch, power connector and led from the original
A TI99/4A USBC-PD internal psu replacement
I didnt have the external psu with the weird connector on it
Just had to harvest the power switch, power connector and led from the original
June 12, 2025 at 6:38 PM
A little side project i asked my friend @zaxour.bsky.social for
A TI99/4A USBC-PD internal psu replacement
I didnt have the external psu with the weird connector on it
Just had to harvest the power switch, power connector and led from the original
A TI99/4A USBC-PD internal psu replacement
I didnt have the external psu with the weird connector on it
Just had to harvest the power switch, power connector and led from the original
Soon, Acorn A5000 Issue 1 PAL IOEB version, later the IOEB ASIC version.
Some tidy up of silks, electrically all connected. @peepouk.bsky.social has done a fantastic job once again.
I did the schematics, also needs a little tidy up 😄
There was some differences in the available schematics to iss.1
Some tidy up of silks, electrically all connected. @peepouk.bsky.social has done a fantastic job once again.
I did the schematics, also needs a little tidy up 😄
There was some differences in the available schematics to iss.1
June 7, 2025 at 9:52 PM
Soon, Acorn A5000 Issue 1 PAL IOEB version, later the IOEB ASIC version.
Some tidy up of silks, electrically all connected. @peepouk.bsky.social has done a fantastic job once again.
I did the schematics, also needs a little tidy up 😄
There was some differences in the available schematics to iss.1
Some tidy up of silks, electrically all connected. @peepouk.bsky.social has done a fantastic job once again.
I did the schematics, also needs a little tidy up 😄
There was some differences in the available schematics to iss.1
Neat, Scotchegg holder holes something @thepillock.bsky.social appreciates in his computers
what the fuck, why does this Apple II have three huge holes in the lid
June 6, 2025 at 8:54 AM
Neat, Scotchegg holder holes something @thepillock.bsky.social appreciates in his computers